Dean Fennell, PhD, FRCP, of the University Hospitals Of Leicester NHS Trust, Leicester, UK, gives an overview of the CheckpOiNt Blockade For Inhibition of Relapsed Mesothelioma (CONFIRM; NCT03063450) trial, which is investigating nivolumab. This video was recorded at the British Thoracic Oncology Group (BTOG) 2019 Annual Conference in Dublin, Ireland.